Abstract

The ultimate location for the disposal of sand dredged from the vicinity of tidal inlets is a compromise between environmental and economic concerns. Grande-Entree Inlet on Iles-de-la-Madeleine in the Gulf of St. Lawrence is used to evaluate a tidal inlet-artificial island system. The cross-sectional area of this inlet is 2960 m2and the tidal prism is 64.1 x 106m3. Escoffier’s concept of critical cross-sectional area shows that Grande-Entree Inlet is stable under natural as well as dredged conditions. The stability of the dredge spoil artificial island is assessed by comparing beach profiles and shoreline changes. The stability of the inlet-island system results from the fact that the tidal inlet is stable and the dredge spoil artificial island was placed on a pre-existing shoal. The dredging of the navigation channel confines the tidal flow so that the tidal inlet and the artificial island can be close to each other without interfering.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.